package com.netty;

import io.netty.bootstrap.Bootstrap;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.util.CharsetUtil;

import java.net.InetSocketAddress;

/**
 * @author: sun.hongliang
 * @create: 2019/01/23 19:49
 */
public class EchoClient {
    private final String host;
    private final int port;

    public EchoClient(String host, int port) {
        this.host = host;
        this.port = port;
    }

    public void start() throws Exception {
        EventLoopGroup group = new NioEventLoopGroup();
        try {
            Bootstrap b = new Bootstrap();
            b.group(group).channel(NioSocketChannel.class)
                    .handler(new ChannelInitializer<SocketChannel>() {
                        @Override
                        protected void initChannel(SocketChannel ch) throws Exception {
                            ch.pipeline().addLast(new EchoClientHandler());
                        }
                    });
            ChannelFuture f = b.connect(host, port).sync();
//            for(int i = 0;i<10;i++){
//                f.channel().writeAndFlush(Unpooled.copiedBuffer("9999!", CharsetUtil.UTF_8));
//            }
            f.channel().closeFuture().sync();

        } finally {
//            group.shutdownGracefully().sync();
        }
    }

    public static void main(String[] args) throws Exception {
        String host = "localhost";
        int port = 9999;
        new EchoClient(host, port).start();
    }
}
